Simply put an wide elastic band (from top to bottom) and across the middle of the opened can. Use the side of the elastic to wipe the excess paint off the brush. Saves a mess on sides of can and the floor.

Trick Source:
Unknown - Source of both the Trick Description and Trick Image are unknown

Paint getting everywhere but the wall? Try some of these simple tips to keep your doorknobs, floors, and furniture from becoming speckled. You will also find some great clean up tips for after your painting project is over.